燃煤热电联产机组耦合固体废物等离子体气化发电系统热经济分析  

Thermo-economic evaluation of a solid waste plasma gasification power system integrated with a combined heat and power plant

作　　者：周专 王新刚 边家瑜 于志勇 刘骏 陈衡 ZHOU Zhuan;WANG Xingang;BIAN Jiayu;YU Zhiyong;LIU Jun;CHEN Heng(State Grid Xinjiang Electric Power Co.Ltd.,Urumqi 830011,China;State Grid Xinjiang Economic Research Institute,Urumqi 830063,China;School of Energy,Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]国网新疆电力有限公司,新疆乌鲁木齐830011 [2]国网新疆电力有限公司经济技术研究院,新疆乌鲁木齐830063 [3]华北电力大学能源动力与机械工程学院,北京102206

出　　处：《热力发电》2023年第8期13-25,共13页Thermal Power Generation

基　　金：国网新疆电力有限公司科技项目(SGXJ0000FCJS2200543);国家自然科学基金面上项目(52276006)。

摘　　要：提出了一种将固体废物等离子体气化、燃气轮机、吸收式热泵和燃煤热电联产机组结合的新型垃圾混合发电系统。该系统中,医疗废物被送入等离子体气化炉并转化为合成气,经过必要的处理后被输送到燃气轮机子系统;合成气和烟气余热一部分作为吸收式热泵高温热源用于供热,其余则直接用于加热燃煤热电机组的给水。以典型燃煤热电联产机组为参考,从热力学和经济学角度分析了该混合发电系统的经济效益,结果表明:一旦供热量和来自燃煤的净电功率保持不变,医疗废物产生的净电功率为7.47 MW,而垃圾发电净效率达到47.96%;仅5.23年就能收回该混合发电系统初始投资,在其25年的使用寿命中可实现50362.94万元的收益。A novel hybrid design that combines solid waste plasma gasification,gas turbine,absorption heat pump,and coal-fired combined heat and power plant has been proposed.In the integrated scheme,medical waste is sent to the plasma gasifier and converted to syngas,which is conveyed into the gas turbine system after the necessary treatment.In terms of waste heat utilization of syngas and flue gas,some are used by the absorption heat pump for heating,and the rest are used to heat the feedwater of the coal-fired combined heat and power plant directly.Based on a typical coal-fired combined heat and power plant,the benefits of this system are examined in terms of both thermodynamics and economics.Once the heat supply and the net electricity from coal remain the same,the net power generated by the waste in the hybrid design is 7.47 MW,while the net waste-to-energy efficiency reaches 47.96%.In just 5.23 years,the initial investment in the proposed system is recouped,and in its 25-year lifetime,the system achieves a net present value of 50362.94 thousand CNY.

关 键 词：垃圾发电 燃煤机组 热电联产 等离子气化 性能评估 

分 类 号：TM621[电气工程—电力系统及自动化] X705[环境科学与工程—环境工程]